Skim milk into whole milk

I have a recipe that I want to make that calls for 2 cups of whole milk. I have skim milk and I have heavy cream. How can I approximate whole milk? I was going to try 12/3c skim to 1/3 cup cream. Does that sound about right? Does anyone have any idea about this?

I think that whole milk is 4% fat and cream is 35% fat (right? not totally sure about that...) if you want the same amount of fat (assuming skim milk is 0%), you can use the old C1 * V1 = C2 * V2 formula:2 c. * 0.04 = x c. * 0.35x = .23 or about 1/4 c. of cream, 2 and 3/4 c. skim.